Can bristlenose plecos live with serpae tetras?

Verdict
Yes

Yes, bristlenose plecos and serpae tetras can live together. Both are fine at 73–79°F. Plan on at least 30 gal.

Bristlenose plecoBristlenose pleco73–81°F · pH 6.5–7.5 Serpae tetraSerpae tetra72–79°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 73–79°Bristlenose pleco 73–81°Serpae tetra 72–79°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Bristlenose pleco 6.5–7.5Serpae tetra 6–7.5
The green band is the pH both tolerate.

Size to scale

Bristlenose pleco · 5 inSerpae tetra · 1.75 in0"1"2"3"4"5"6"
Adult length in an aquarium. A fish can swallow anything that fits in its mouth, roughly a third to half its own length for predators.

Care at a glance

Bristlenose plecoSerpae tetra
Temperature73–81 °F72–79 °F
pH6.5–7.56–7.5
Adult size5.0 in1.75 in
Minimum tank30 gal20 gal
TemperamentPeacefulSemi-aggressive
Swims atBottomMiddle
GroupAlone or in pairsGroups of 6+
DietHerbivoreOmnivore

Better tank mates for bristlenose plecos

All bristlenose pleco tank mates

Better tank mates for serpae tetras

All serpae tetra tank mates

Questions

Can bristlenose plecos live with serpae tetras?

Yes, bristlenose plecos and serpae tetras can live together. Both are fine at 73–79°F. Plan on at least 30 gal.

What temperature suits both bristlenose plecos and serpae tetras?

73–79 °F. Bristlenose plecos need 73–81 °F, serpae tetras need 72–79 °F.

What size tank do bristlenose plecos and serpae tetras need together?

At least 30 gal, set by the bristlenose pleco. Add space for each extra fish.